Remove some staking code

src/wallet/walletdb.cpp

@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2014 The Bitcoin Core developers
+// Copyright (c) 2019      The Hush developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -488,13 +489,10 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
             auto verifier = libzcash::ProofVerifier::Strict();
             // ac_public chains set at height like KMD and ZEX, will force a rescan if we dont ignore this error: bad-txns-acpublic-chain
             // there cannot be any ztx in the wallet on ac_public chains that started from block 1, so this wont affect those. 
-            // PIRATE fails this check for notary nodes, need exception. Triggers full rescan without it. 
+            // ac_private chains fail this check for notary nodes, need exception. Triggers full rescan without it. 
             if ( !(CheckTransaction(0,wtx, state, verifier, 0, 0) && (wtx.GetHash() == hash) && state.IsValid()) && (state.GetRejectReason() != "bad-txns-acpublic-chain" && state.GetRejectReason() != "bad-txns-acprivacy-chain" && state.GetRejectReason() != "bad-txns-stakingtx") )
             {
                 //fprintf(stderr, "tx failed: %s rejectreason.%s\n", wtx.GetHash().GetHex().c_str(), state.GetRejectReason().c_str());
-                // vin-empty on staking chains is error relating to a failed staking tx, that for some unknown reason did not fully erase. save them here to erase and re-add later on.
-                if ( ASSETCHAINS_STAKED != 0 && state.GetRejectReason() == "bad-txns-vin-empty" )
-                    deadTxns.push_back(hash);
                 return false;
             }
             // Undo serialize changes in 31600